Weird vacuum or whistle noise at 1300rpms
#1
Weird vacuum or whistle noise at 1300rpms
Like the title says i have a weird noise that happens between 1100 and 1400 rpms, but is mostly heard louder at 1300. It sounds like a vacuum/whistle, and mostly occurs while under very light throttle to deceleration or coasting. I also noticed it's a little more pronounced when it's colder outside and also when the engine is cold.
I was just driving around trying to trouble shoot this and it sounds from the engine, it's not my throttle spacer that's a different whistle, i think anyways. To me it sounds like a vacuum leak or something but no engine lights or nothing. Everything still runs smooth also.
Another thing is i couldn't reproduce the sound while in Tow/Haul, but mostly because it was hard to achieve rpms below 1500, but i did at one point and didn't hear nothing. Not sure if it's related to anything or MDS but it was part of my trouble shooting. I'm pretty sure i didn't hear this noise before, i could be wrong but i think it's new. Like i said sounds like a vacuum, whistle or a diff whining, but it's coming from the engine bay for sure.
Does anyone have a clue what it could be, or can anyone tell me if they hear this on their trucks. I tried to take a video but it's hard to hear the sound. Thanks for any input.
I was just driving around trying to trouble shoot this and it sounds from the engine, it's not my throttle spacer that's a different whistle, i think anyways. To me it sounds like a vacuum leak or something but no engine lights or nothing. Everything still runs smooth also.
Another thing is i couldn't reproduce the sound while in Tow/Haul, but mostly because it was hard to achieve rpms below 1500, but i did at one point and didn't hear nothing. Not sure if it's related to anything or MDS but it was part of my trouble shooting. I'm pretty sure i didn't hear this noise before, i could be wrong but i think it's new. Like i said sounds like a vacuum, whistle or a diff whining, but it's coming from the engine bay for sure.
Does anyone have a clue what it could be, or can anyone tell me if they hear this on their trucks. I tried to take a video but it's hard to hear the sound. Thanks for any input.
#3
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#6
Mine does this, has since new but you could not really hear it with the factory intake although it is still there. I thought it was the stock intake tube not being smooth since I have an early 09 and bought an Airaid that used the stock tube. But even after getting a new intake, the AFE has a smooth intake tube, is an open design and you can still hear this at part throttle so it is not the tube. Louder in cold weather. I was thinking of getting a Volant since it is a closed intake, would sound great at WOT but seems like a waste of $$ and just put the stock one back on.
#7
Mine does this, has since new but you could not really hear it with the factory intake although it is still there. I thought it was the stock intake tube not being smooth since I have an early 09 and bought an Airaid that used the stock tube. But even after getting a new intake, the AFE has a smooth intake tube, is an open design and you can still hear this at part throttle so it is not the tube. Louder in cold weather. I was thinking of getting a Volant since it is a closed intake, would sound great at WOT but seems like a waste of $$ and just put the stock one back on.